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Catalyst composition for ethylene tetramerization

A technology of ethylene tetramerization and composition, applied in the field of ethylene tetramerization catalyst composition, can solve the problem of low selectivity of 1-octene

Active Publication Date: 2013-05-15
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

The traditional 1-octene production method is the ethylene oligomerization method. The ethylene oligomerization technology follows the Schulz-Flory distribution, not only 1-octene products are obtained, but also other α-olefins and a small amount of solid polymers, and the target product 1 - The selectivity of octene is very low, no more than 30%

Method used

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  • Catalyst composition for ethylene tetramerization
  • Catalyst composition for ethylene tetramerization
  • Catalyst composition for ethylene tetramerization

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Embodiment Construction

[0020] The following examples are only used to illustrate the present invention in detail, but it should be understood that the scope of the present invention is not limited to these examples.

[0021] Ligand Synthesis Example 1: Ligand L 1 Synthesis of (R=Ph)

[0022] For the preparation method of the ligand, reference can be made to the literature (Journal of Organometallic Chemistry, 1985, 281, C29-C32). Concrete steps are: under nitrogen protection, 0.01mol [(C 6 h 5 ) 2 P] 2 NH was dissolved in 50 mL of tetrahydrofuran, and 0.01 mol of butyllithium was added under stirring. After the reaction was stable, 0.01 mol of diphenylphosphine chloride was slowly added, and the dropwise addition was completed, and heated to reflux for 1 hour. After the reaction is completed, filter, and distill the filtrate to remove the solvent under reduced pressure, and the obtained solid is the ligand L 1 . 1 H-NMR (δ, ppm, CDCl 3 , TMS): 7.3 (m, 30H, Ar-H).

[0023] Ligand Synthesis E...

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Abstract

The invention provides a catalyst composition for ethylene tetramerization. The catalyst composition comprises a heteroatom ligand with a skeleton pattern and shown as a formula (I), a transition metal compound and a catalyst promoter. The invention also provides an ethylene tetramerization process. The catalyst composition for ethylene tetramerization provided by the invention can produce 1-hexene in high selectivity, and selectivity of 1-octene is higher than 70%.

Description

technical field [0001] The invention relates to the field of ethylene oligomerization, in particular to a catalyst composition for ethylene tetramerization. The invention also relates to the application of the catalyst composition in ethylene tetramerization. Background technique [0002] As an important organic raw material and chemical intermediate, 1-octene is mainly used to produce high-quality polyethylene (PE). The linear low-density polyethylene (LLDPE) produced by the copolymerization of 1-octene and ethylene can significantly improve the properties of PE, especially the mechanical properties, optical properties, tear strength and impact strength of polyethylene. , very suitable for packaging films and agricultural covering films such as greenhouses and sheds. At the same time, 1-octene is also used as an intermediate for plasticizers, fatty acids, alcohols for detergents, and lubricating oil additives. [0003] Although the value of 1-octene is well known, the art...

Claims

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Application Information

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IPC IPC(8): B01J31/24C07C2/36C07C11/02
CPCY02P20/52
Inventor 吴红飞张立超韩春卉张凌燕栗同林郑明芳刘珺祁彦平
Owner CHINA PETROLEUM & CHEM CORP
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